Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d64d397e764d25d…

MALICIOUS

PDF

42.7 KB Created: 2020-11-03 16:07:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0925dbdaf073236b1a912240b5fd8e66 SHA-1: d04c90f1f1fcb9c4760b03b8b39c37f627b8fbe0 SHA-256: 8d64d397e764d25da486158c546e6e4e1377af71369b6a9a2be87694ed4b6ed2
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/123?keyword=inner+child+healing+work+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412408/normal_5f9e2d3832f92.pdfIn PDF document text
    • https://zogetesiwuxiwa.weebly.com/uploads/1/3/4/4/134487963/jusenoseliw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368768/normal_5f88bdc8d125e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368741/normal_5f9a13c731358.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423171/normal_5f9ffca34bfe5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427828/normal_5f9fe1cb62269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5f90668ddf834.pdfIn PDF document text
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/e3ac99.pdfIn PDF document text
    • https://vemetufubejukat.weebly.com/uploads/1/3/4/3/134367776/3172108.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/gosibokuvefuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad7b6909-0427-4286-a900-7e771d658c0a/japugure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb869f23-0cc5-4df9-98f2-5ccf1df45fab/16420556487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd842d84-91b4-445b-95cf-4e7459118e5a/zumedixumexujexipomalolo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000678c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678C 5332 bytes
SHA-256: 2bc7dc37abc286b216d8ac865a331d211188f9d25edc7e772ddfa6b60db1c716
font_01_sfnt_off000079c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C0 10572 bytes
SHA-256: e95d366ed12d25ae4cf83ed1506cdfef2fdf386ad19e73865d4bb3a1e3c1d2d0